已知直线
与圆
交于
、
两点,过
、
分别作
轴的垂线,垂足为
、
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d26315c943d58c710dbcfa566ef3de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1d5fa66a3f158459aff58e80920d6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eddeaac3f85d4b7b0326935e87a0dc05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.1 | B.![]() | C.![]() | D.2 |
更新时间:2020-10-28 05:01:35
|
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】已知抛物线
,直线l交C于A,B两点,若弦AB的中点的纵坐标为
,则直线l的倾斜角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】已知直线l经过
,则直线l的倾斜角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8f17c0ceb6af822f91167307fb6f9ea.png)
A.20° | B.70° | C.160° | D.110° |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐1】直线l与圆
相交于A,B两点,则弦长
且在两坐标轴上截距相等的直线l共有( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550d183b05000722c74baf25eb4a6741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cef568cfe2fc12a4dec11533ada274.png)
A.1条 | B.2条 | C.3条 | D.4条 |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】某学校有2500名学生,其中高一1000人,高二900人,高三600人,为了了解学生的身体健康状况,采用分层抽样的方法,若从本校学生中抽取100人,从高一和高三抽取样本数分别为
、
,且直线
与以
为圆心的圆交于
、
两点,且
,则圆
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbd107ae67aed8030e6331943a2da9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b931faee548175c7895ac9eeca6fed83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86c589939053ce21ce0a67cf40054a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次